Why are some waves small and some large?

Adilute aqueous potassium nitrate solution is

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number